diff --git a/ansible/playbook.yml b/ansible/playbook.yml
index c989a15..799cb75 100644
--- a/ansible/playbook.yml
+++ b/ansible/playbook.yml
@@ -180,7 +180,7 @@
         group: root
         mode: '0600'
         provider: selfsigned
-        selfsigned_not_before: "20241104T000000Z"
+        selfsigned_not_before: "2024-11-04"
         selfsigned_not_after: "+365d"
 
     - name: Configure Nginx as HTTPS proxy